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White Rodgers mercury flame sensor with 48 inch capillary and 42 inch lead

WHITE RODGERS (EMERSON ELEC)

WHITE RODGERS 30A46 005S1 Mercury Flame Sensor 48 in Capillary 42 in Lead

SKU CH-8ZVJ-ZPCHW

Mercury flame sensor with 48 in capillary and 42 in lead fits universal hot-surface ignition systems

  • ColorTransparent
  • 48 in capillary provides flexible furnace placement
  • 42 in lead reaches distant gas valves easily
  • Mercury sensing delivers reliable flame detection every time
  • 90 VA at 30 V AC powers compatible ignition systems
  • Universal bracket and stud mount fit multiple furnace models

Mercury Flame Sensor Replacement

The White Rodgers 30A46 005S1 is a universal mercury flame sensor designed for HVAC systems using hot surface ignition. It serves as a direct replacement for compatible manufacturer models in both residential and commercial heating equipment. The sensor monitors flame presence to ensure safe and reliable burner operation.

Universal Bracket And Plug-In Lead

A universal mounting bracket and stud-mount probe allow installation across a range of furnace and boiler configurations without special adapters. The 42 in plug-in lead provides flexible routing to the control module, while the 48 in capillary tube positions the sensing element accurately within the burner assembly. These features reduce installation time and part-matching errors.

High-Temperature Capillary And VA Rating

The capillary tube withstands a maximum rod temperature of 400 Degrees F, giving headroom for normal flame roll-out and prolonged duty cycles. Rated at 90 VA @ 30V AC, the sensor suits standard gas valve circuits for LP and natural gas fuels. It is not suited for millivolt systems or applications exceeding the stated temperature and electrical limits.

Highlights

  • 48 in capillary provides flexible furnace placement
  • 42 in lead reaches distant gas valves easily
  • Mercury sensing delivers reliable flame detection every time
  • 90 VA at 30 V AC powers compatible ignition systems
  • Universal bracket and stud mount fit multiple furnace models

Specifications

BrandWHITE-RODGERS
ColorTransparent

Questions about this item

How often does the mercury flame sensor need to be replaced?

The sensor is a replacement-type universal component rated for a maximum rod temperature of 1,400 degrees F; typical service life depends on operating conditions and fuel type.

What is the first limit reached during continuous operation?

The probe is rated to a maximum rod temperature of 1,400 degrees F, which is the primary thermal limit under sustained use.

How much heat does the probe generate during all-day operation?

The probe tip is designed to withstand up to 1,400 degrees F in LP or natural gas systems, and the capillary tube length is 48 in.

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